ES2459882T3 - Packaging and application device for a cosmetic and / or dermatological product - Google Patents

Abstract

Device for applying and packaging a cosmetic and / or dermatological product comprising: a container (2) containing the cosmetic and / or dermatological product (P), the container (2) 5 comprising a draining piece (3); an applicator (1) comprising: a rod (5), the rod (5) having a complementary cross section of that of the draining piece (3) such that the rod (5) slides through the piece drained (3), 10 the rod (5) presenting a transverse dimension D1; an applicator element (6) axially extending the rod (5) and extending longitudinally along a length L2, the applicator element (6) comprising a proximal part (6a) close to the rod (5) and a distal part (6b ) away from the rod (5); a tip (9) of a plastic material that covers the distal part (6b) of the applicator element (6), the tip (9) comprising a core (10) covered by rough edges (12), characterized in that the core (10 ) is geometrically comprised inside a first cylindrical shell (11) of diameter D3 and length L3 such that: 0.4 D1 <D3 <0.99 D1; 0.05 L2 <L3 <0.5 L2 and why the rough edges (12) laterally delimit a second envelope (14) that has at least one transverse dimension D4 greater than or equal to the nominal transverse dimension D1 of the rod (5) .

Description

Packaging and application device for a cosmetic and / or dermatological product.

Technical field of the invention

 The present invention relates to the packaging and application devices of a cosmetic or dermatological product, and more particularly to a packaging and application device of a mascara.

 State of the prior art

 The use of mascara is increasingly widespread to enhance the eyelashes and beautify the look. The mascara should allow you to have the eyelashes or take care of them, but also lengthen them or even shape them, for example by separating and curving them. For this, the texture of the mascara itself is, of course, very important, but an essential element in the application of the mascara is the applicator of the mask. In recent years, mascara manufacturers have developed mask applicators comprising a brush-shaped applicator element and a tip. These types of applicators are described, for example, in documents FR 2470556 or JP 2005087635. These tip applicators are especially advantageous since they allow not only to extend the mask through all the eyelashes by means of their brush-shaped soul, but also Make up the ends of the eyelashes by means of their tip. However, at these tips, the mascara tends to accumulate, which can lead to the formation of sticks on the eyelashes when the tip comes into contact with the eyelashes. In addition, the presence of the tip reduces the surface of the soul in the form of a brush and, therefore, the surface of application of the mask on the whole of the eyelashes, which can lead to a non-homogeneous distribution of the mask on the tabs. EP 0 875 169 describes a mascara applicator comprising a first application area consisting of a support that has a revolution symmetry around an axis, which has a plurality of reliefs or roughnesses in at least one part of its surface, so that it retains a makeup product on its surface and so that it is applied on a surface to be treated, and a second application area, adjacent to the first, and at least partially constituted by a material adapted to pump product in depth, and / or natural or synthetic fibers. This second part is inscribed within a cylindrical envelope that has a larger diameter, measured with respect to the axis of symmetry of the first part, which is smaller than the diameter of the first part. Therefore, there is also a risk of product accumulation at the end of the applicator.

Description of the invention

 The invention aims to solve the drawbacks of the state of the art linked to the presence of the tip while retaining the advantages of the tip. More precisely, the invention relates to a device for applying and packaging a cosmetic and / or dermatological product comprising:

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 a container containing the cosmetic and / or dermatological product, the container comprising a piece of drained;

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 an applicator comprising:  

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 a rod, the rod having a complementary cross-section of that of the drain piece such that the rod slides through the drain piece, the rod having a cross-sectional dimension D1;

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 an applicator element axially extending the rod and extending longitudinally along a length L2, the applicator element comprising a proximal part close to the rod and a distal part away from the rod;

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 a tip of a plastic material that covers the distal part of the applicator element, the tip comprising a core covered by rough edges, the core being geometrically comprised inside a first cylindrical shell of diameter D3 and length L3 such that 0.4 D1 lt; D3 lt; 0.99 D1 and 0.05 L2 lt; L3 lt; 0.5 L2, and laterally defining the roughness of a second envelope that has at least one transverse dimension D4 greater than or equal to the nominal transverse dimension D1 of the rod.

This document qualifies a dimension or an element of "longitudinal", "length" or "axial" when extending parallel to an axis defined by the rod and qualifying a dimension or a "transverse" element when extends perpendicular to this axis defined by the rod.

When talking about a "cross-sectional dimension", when the object is asymmetrical, the largest cross-sectional dimension is designated.

Advantageously, the second envelope is cylindrical and, in this case, the transverse dimension D4 is equal to the diameter of the cylinder.

The core is geometrically comprised within a first cylindrical envelope, which means that the core can have any shape from the moment it is fully included within this envelope. However, in a preferred embodiment, the core laterally delimits a first cylindrical envelope, which means that it comprises several protruding points or edges that, if joined laterally, define a cylindrical envelope. The cases in which the core is circular or cylindrical section are included in these geometric definitions of the core.

Similarly, the fact that the rough edges laterally delimit a second envelope means that the rough edges define, if joined laterally, an envelope. This envelope is preferably cylindrical or conical, but it can also be asymmetric. For example, the roughnesses can be piquitos that have different lengths from each other: in this way it is possible to consider making piquito combs on each side of the core in order to be able to comb the eyelashes by zones. A second cylindrical envelope makes it easier to manufacture the tip.

The device according to the invention is especially advantageous since its dimensions allow optimal draining of the tip.

In fact, the core is comprised within an envelope that has a diameter less than 0.99 times the transverse dimensions of the rod, which allows the core to slide through the drain piece without contact with the piece drained As a consequence, a minimum amount of cosmetic and / or dermatological product remains on the core, which allows a nucleus sufficiently loaded with cosmetic and / or dermatological product to allow a uniform application of the product at the ends of the eyelashes. On the other hand, the roughness laterally delimits a second envelope that has a transverse dimension D4 greater than or equal to the nominal transverse dimension D1 of the rod, which guarantees that at least a part of the roughness comes into contact with the draining piece when the tip passes through the draining piece and, as a consequence, the draining piece drains the residual cosmetic and / or dermatological product that carried the roughness with the passage of the tip through the draining piece. In this way the sticks of cosmetic and / or dermatological product on the eyelashes are avoided.

On the other hand, the core preferably has transverse dimensions greater than 0.4 times the transverse dimension of the rod, which allows, on the one hand, to facilitate the fabrication of the core and the assembly of the tip on the distal end of the element. applicator and, on the other hand, avoid that the tip is too loaded with cosmetic and / or dermatological product: indeed, if the nucleus is too small and the roughness too deep with respect to the core dimensions, a large amount of cosmetic product and / or dermatological will be stored on the surface of the nucleus, which will favor the formation of sticks of cosmetic product on the surface of the eyelashes.

For this, in a preferred embodiment, the core has a transverse dimension greater than 0.7 times the transverse dimension of the rod.

The draining piece can be a simple ring of a plastic material, elastically deformable or not, that is mounted inside a neck of the container, or it can be a more complex device through which the applicator passes. These types of draining parts are known from the prior art and are described, for example, in FR 2919586.

On the other hand, the device according to the invention allows to solve another inconvenience of the state of the art by proposing a tip whose longitudinal dimensions are selected such that the applicator element has a sufficiently important application surface with respect to that of the tip for that the cosmetic and / or dermatological product is deposited homogeneously in all eyelashes.

For this, the core has, in a particularly advantageous embodiment, a length L3 such that 0.2 L2 lt; L3 lt; 0.5 L2.

Advantageously, the applicator element is constituted by a longitudinal central core around which a brush is wound, which allows the users of the device to rotate the applicator element against the flanges in order to obtain a more homogeneous application of the cosmetic product The longitudinal core is preferably constituted by a steel-type metal, while the brush is preferably constituted by bristle bundles, which may be composed of elastically deformable plastic, for example, nylon, solid or hollow fiber. . The brush has a twisted shape.

Advantageously, the brush has a diameter D2 greater than the transverse dimension of the rod D1 such that, when the applicator passes through the draining piece, the brush comes into contact with the draining piece in such a way that drain the brush.

According to different embodiments:

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the roughness of the tip and the brush of the applicator element can be manufactured in an elastically deformable plastic, while the draining piece is made of a rigid material, such that the roughness of the tip and the brush of the applicator element are deformed with the passage of the piece of drained; This embodiment is especially advantageous since it allows a very good draining of the applicator and is simple to manufacture; or

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the roughness of the tip and the brush of the applicator element can be made of a rigid material, while the draining part is made of an elastically deformable material, such that the draining part deforms with the passage of the applicator; This embodiment is also advantageous since it allows to limit the residues of cosmetic and / or dermatological product on the draining piece.

On the other hand, the rod is preferably cylindrical and, in this case, the transverse dimension D1 of the rod is equal to the diameter of the rod. This embodiment allows to facilitate the manufacture of the brush.

According to different embodiments:

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The core can be constituted by a cylindrical proximal part and a semi-spherical distal part, which allows the user to use his applicator without worrying about its meaning; or

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The core can be constituted by a proximal part with a hexagonal cross-section and a semi-spherical distal part, which allows the user to benefit from the edges around the entire tip in order to be able to extend the cosmetic product more precisely .

Advantageously, only the proximal part of the nucleus is covered with roughness, the distal part of the nucleus being smooth, which limits the risks of injury to the user.

According to a particularly advantageous mode of realization, the tip is constituted by a piece formed by injection.

Advantageously, the roughness of the tip is constituted by elastically deformable piquitos, which allows a better application of the cosmetic and / or dermatological product on the small size eyelashes.

Advantageously, the piquitos have different lengths.

According to different embodiments:

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the piquitos can have all the same length, which facilitates their manufacture;

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the piquitos can have different lengths: the piquitos can be, for example, distributed in lines that extend longitudinally, the piquitos being of certain lines longer than the piquitos of the other lines, which allows a more precise makeup.

According to different embodiments:

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The tip is overmolded on the applicator element, which allows to reduce the clearance between the applicator element and the tip. In addition, this allows for better repeatability of the tip assembly on the applicator element. On the other hand, this assembly adapts to all sizes of tip and applicator element and allows a better resistance over time of the tip on the applicator element; this embodiment is, therefore, the preferred mode of realization of the invention since it avoids the risk that the tip detaches from the applicator element which could then damage the user;

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The tip is hot pressed onto the applicator element. This type of assembly is simpler than the previous one, well controlled; -the tip is mounted cold on the applicator element, which allows working with varied sizes of tip and applicator element.

Advantageously, the tip is made of elastomer.

Brief description of the drawings

Other features and advantages of the invention will be shown by reading the description that follows, with reference to the attached figures, which illustrate:

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Figure 1, a longitudinal sectional view of an application and packaging device for a product

cosmetic and / or dermatological according to a first embodiment of the invention;

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Figure 2, a perspective view of the applicator of the device of Figure 1;

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Figure 3, a sectional view of the applicator of Figure 2;

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Figure 4, a schematic side view of the tip of the applicator of Figure 2;

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Figure 5, a longitudinal sectional view of the tip of Figure 4;

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Figure 6, a cross-sectional view of the tip of Figure 4;

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Figure 7, a perspective view of the tip of Figure 4;

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Figure 8, a longitudinal sectional view of an application and packaging device for a product

cosmetic and / or dermatological according to a second embodiment of the invention;

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Figure 9, a side view of the tip of the applicator of the device of Figure 8;

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Figure 10, a perspective view of the tip of Figure 9;

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Figure 11, a cross-sectional view of the tip of Figure 9;

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Fig. 12, a cross-sectional view of a tip of a device according to another mode of

realization of the invention.

For the sake of clarity, identical or similar elements are designated with the same reference signs in all figures.

Detailed description of an embodiment

Figure 1 represents a device for applying and packaging a mask according to an embodiment of the invention. This device comprises an applicator 1 and a container 2. The container 2 is provided with a drain piece 3. The container 2 is made of rigid plastic. The container 2 contains a mascara P in which a part of the applicator 1 is soaked when it is inside the container 2. When the applicator 1 is inside the container 2, the applicator 1 can be screwed onto the container 2.

The applicator 1 is represented more precisely in Figures 2 and 3. It comprises a gripping element 4 at the end of which is a rod 5. The rod 5 is preferably composed of polyoxymethylene, polypropylene or any other rigid material. When the device is in the closed position, the gripping element 4 comes into contact with the container 2 such that the device is sealed.

The rod 5 extends longitudinally along a reference axis X. The rod 5 is cylindrical with a transverse dimension D1 which is equal in this case to the diameter of the cylinder forming the rod 5. The rod 5 has a complementary cross section. from that of the drain piece 3 such that, when the applicator is removed from the container, the rod slides against the inner walls of the drain piece, without the movement of the rod 5 being hindered by the piece of drained 3.

At the end of the rod 5, there is an applicator element 6 that extends longitudinally along the X axis. This applicator element 6 has a proximal end 6a that is close to the rod 5 and a distal end 6b that is located away from the rod 5. The applicator element 6 is constituted by a central metal core 7 which extends in the extension of the rod 5 along the X axis and which is surrounded by a brush 8 constituted by bundles of bristles. Brush 8 is elastically deformable. The brush has a diameter D2 and extends parallel to the X axis in a length L2.

A tip 9 covers the distal part 6b of the applicator element 6. More precisely, the tip 8 is overmolded on the distal end of the longitudinal central core 7 of the applicator element 6. This tip is formed by a single piece of TPE or elastomeric thermoplastic .

The tip 9 is constituted by a core 10. This core 10 comprises a proximal part 10a adjacent to the applicator element 6 and a distal part 10b away from the applicator element 6. The proximal part 10a of the core forms a cylinder, while the distal part 10b of the nucleus forms a hemisphere. The core assembly laterally delimits a first cylindrical shell of diameter D3. The core 10 extends longitudinally over a length L3.

The tip 9 also comprises rough edges 12 located on the surface of the core 10. These rough edges 12 form small spikes 13 that protrude from the surface of the core 10 and are distributed along its surface. In the proximal part 10a of the core, the piquitos are aligned parallel to the X axis, and in the distal part 10b of the core 10, these piquitos 13 are distributed regularly so that their ends delimit a hemisphere. The piquitos, which are made of TPE, like the rest of the tip, have the shape of small cones with a diameter at the base equal to approximately 0.2 mm and with a length substantially equal to 2 mm. These piquitos are elastically deformable.

The tip 9 is made by injection in one piece and in this case it is overmoulded on the applicator element 6.

The rough edges 12 laterally delimit a second cylindrical envelope 14 with a transverse measure D4. D4 is, in this case, the diameter of the cylinder 14.

The dimensions of the mascara applicator verify the following relationships: 0.4 D1 lt; D3 lt; 0.99 D1 and 0.05 L2 lt; L3 lt; 0.5 L2. In addition, D4 is greater than or equal to D1.

In the present case, D1 is equal to 4.3 cm, D2 to 4.5 cm, D3 to 4 cm and D4 to 4.5 cm. As for L2, it is equal to 19 cm, while L3 is equal to 10 cm. These dimensions are especially advantageous and constitute a preferred mode of realization of the invention, regardless of the materials selected in this detailed mode of realization.

These dimensions are selected such that, when the applicator 1 is removed from the container 2, the rod 5 of the applicator 1 easily slides through the draining element 3. On the contrary, the brush 8 of the applicator element 6 cannot exit the drain piece 3 without being elastically deformed and, as a consequence, the brush 8 is drained against the drain piece 3. In this way the excess of mascara on the brush 8 is retained inside the container 2 by the piece of drained 3, which prevents the brush 8 from being overloaded with mascara and therefore avoids mask sticks in the eyelashes.

In addition, core 10 is narrow enough to pass through the drain piece without difficulty. In this way, the mascara of the surface of the core 10 is not removed when the core 10 passes through the drain piece 3. On the contrary, the piquitos 13 cannot pass through the drain piece 3 without the deform the walls of the draining piece 3, which allows the excess mascara to be removed in the piquitos 13. By means of this draining, the piquitos 13 which essentially allow the mask to be applied in the corner of the eyelashes and in the eyelashes Short, they only include a thin layer of mask on their surface, which avoids mask sticks in the corner of the eyelashes.

In addition, the piquitos 13 have a length substantially equal to a quarter of the transverse dimension of the core 10, such that the tip 9 has a sufficiently deep surface between the piquitos 13 to load the sufficient amount of mascara on its surface, but without nevertheless presenting a surface too deep, which would lead to an excessive load of mascara on the tip 9 and the mascara would be trapped at the base of the piquitos 13.

On the other hand, the tip 9 has a length L3 substantially equal to half of the length L2 of the applicator element 6. This relationship between the lengths, regardless of the materials or geometries selected in this embodiment, allows to have the sufficient surface of application on the surface of the applicator element 6 to make up the longest eyelashes in a homogeneous manner, while having a tip 9 long enough to allow precision work with this tip.

The invention allows, therefore, a homogeneous application of the mask in both short and long eyelashes, and without sticks.

In the embodiment described above, the tip and the applicator element are elastically deformable, while the drain piece is non-deformable. However, it is also possible to consider making a non-deformable tip and applicator element, which pass through an elastically deformable drain piece, comprising rubber, for example.

The draining piece can also be subject to variations: it can be constituted only by a narrowing through which the applicator passes or it can also be more complex in order to optimize the draining of the applicator.

FIGS. 8 to 11 represent another embodiment in which the tip 9 comprises a core 10 and a few pegs 13. The core 10 comprises a cylindrical proximal end 10a and a hemispherical distal end 10b. The proximal end 10a of the nucleus is covered with piquitos 13, while the distal end 10b is smooth, which avoids the risk of injury to the user with the distal end 10b. At the proximal end 10a, the piquitos 13 are distributed in such a way that they form longitudinal lines 15 and 16. The proximal end 10a comprises six longitudinal lines 15 with piquitos of a length of 2 mm. Between two longitudinal lines 15 with 2 mm pigeons is a longitudinal line 16 with 1 mm length piquitos. This alternation of more or less long piquitos allows to correctly separate the eyelashes.

Figure 12 depicts a cross-sectional view of a tip 9 for a device according to another embodiment of the invention. This tip 9 comprises a core 10 covered by some piquitos 13. These piquitos delimit a second asymmetric envelope 14 having at least one transverse dimension D4 greater than the transverse dimension D1 of the rod.

Naturally, the invention is not limited to the embodiments described above that only

5 are given for illustrative purposes. In particular, it can be considered to make a point that presents another geometry. The core may, for example, have a hexagonal cross section. In this case, the core can also laterally delimit a first cylindrical envelope that passes through each of the edges of the hexagon.

It can also be considered to give the roughness a different shape: these can, for example, form grooves on the surface of the core or can even form small, cylindrical or rectangular shaped beaks.

The applicator element can also be shaped without leaving the scope of the invention. For example, a brush-shaped applicator element can be made.

The materials can also be the object of different variants: in this way the applicator element can be manufactured entirely of elastomer, or it can also comprise metal. The tip can be made of N�R or cross-linked butyl nitrile or any other elastomer elastically deformable.

Claims (16)

1. Device for applying and packaging a cosmetic and / or dermatological product comprising:

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a container �2� containing the cosmetic and / or dermatological product �P�, the container �2� comprising a drain piece �3�; -A applicator �1� comprising:

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a rod �5�, the rod �5� presenting a complementary cross-section of that of the drain piece �3� such that the rod �5� slides through the drain piece �3�, presenting the rod �5� a transverse dimension D1;

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an applicator element �6� axially extending the rod �5� and extending longitudinally along a length L2, the applicator element �6� comprising a proximal part �6a� close to the rod �5� and a distal part �6b � away from the rod �5�;

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a tip �9� of a plastic material that covers the distal part �6b� of the applicator element �6�, the tip �9� comprising a core �10� covered by roughnesses �12�,

characterized in that the core �10� is geometrically comprised inside a first cylindrical envelope �11� of diameter D3 and of length L3 such that: 0.4 D1 lt; D3 lt; 0.99 D1; 0.05 L2 lt; L3 lt; 0.5 L2 and because the roughnesses �12� laterally delimit a second envelope �14� that has at least one transverse dimension D4 greater than or equal to the nominal transverse dimension D1 of the rod �5�.

2.

Device according to the preceding claim, characterized in that the applicator element �6� is constituted by a longitudinal core �7� around which a brush �8� is wound.

3.

Device according to the preceding claim, characterized in that the brush �8� has a diameter D2 greater than the transverse dimension of the rod D1.

Four.

Device according to any one of the preceding claims, characterized in that the rod �5� is cylindrical and that the nominal transverse dimension D1 of the rod �5� is equal to the diameter of the rod �5�.

5.

Device according to any one of the preceding claims, characterized in that the core �10� is constituted by a proximal part �10a� cylindrical and by a distal part �10b� semi-spherical.

6.

Device according to any one of claims 1 to 4, characterized in that the core is constituted by a proximal part �10a� of hexagonal cross-section and by a distal part �10b� semi-spherical.

7.

Device according to any one of claims 5 or 6, characterized in that only the proximal part �10a� of the nucleus is covered by roughness, the distal part �10b� of the nucleus being smooth.

8.

Device according to any one of the preceding claims, characterized in that the applicator element �6� is constituted by a metal core and a brush.

9.

Device according to any one of the preceding claims, characterized in that the tip �9� is constituted by a piece formed by injection.

10.

Device according to any one of the preceding claims, characterized in that the roughnesses �12� of the tip �9� are constituted by elastically deformable �13� knobs.

eleven.

Device according to the previous claim, characterized in that the piquitos have different lengths.

12.

Device according to any one of the preceding claims, characterized in that the tip �9� is overmoulded on the applicator element �6�.

13.

Device according to any one of claims 1 to 11, characterized in that the tip �9� is hot-stamped on the applicator element �6�.

14.

Device according to any one of claims 1 to 11, characterized in that the tip �9� is cold mounted on the applicator element �6�.

fifteen.

Device according to any one of the preceding claims, characterized in that the tip �9� is made of elastomer.

16.

Device according to any one of the preceding claims, characterized in that the second envelope �14� is cylindrical.